Dual Setpoint With Pid - ABB DriveIT ACH550-01 User Manual

11. Dual setpoint with PID

This application macro is intended for dual setpoint PI(D)
applications where process PI(D) controllers setpoint can be
changed to another value by activating digital input 3 (DI3).
Process PI(D) setpoints are set to the drive internally with
parameters 4011 (set1) and 4111 (set2).
When using a direct speed reference in AUTO mode, the speed
reference must be connected to analog input 1 (AI1) and the
START command is given with digital input 1 (DI1). In HAND/
OFF mode, the speed reference and START command are
given through the control panel.
If process PI(D) is used, the feedback signal must be connected
to analog input 2 (AI2). Setpoint is set from the control panel as
default but it also can be changed to analog input 1. Process
PI(D) must be commissioned and adjusted with parameters
(Group 40) or using the PID control assistant (recommended).
106
ACH550 User's Manual
Wiring and applications